Plant neighbor identity influences plant biochemistry and physiology related to defense.
Plant neighbor identity influences plant biochemistry and physiology related to defense.
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DOI：
10.1186/1471-2229-10-115
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发表时间：
2010-06-17
影响因子：
5.3
通讯作者：
Vivanco JM
中科院分区：
文献类型：
--
作者：
Broz AK;Broeckling CD;De-la-Peña C;Lewis MR;Greene E;Callaway RM;Sumner LW;Vivanco JM
化学和生物过程决定了个体生物体识别和响应其他生物体的能力。越来越多的证据表明，植物可能能够以一种特定的方式识别和响应邻近的植物。在这里，我们测试了是否个人的外来入侵杂草，矢车菊斑，会调整自己的防御策略，以应对不同的植物邻居。在温室中，C. maculosa个体与同种（C. maculosa）或异种性（Festucaidahoensis）植物邻居，并用植物防御信号分子茉莉酸甲酯诱导以模拟昆虫植食性。我们发现，C。与同种邻居一起生长的maculosa植物表现出增加的总酚水平，而与异种邻居一起生长的那些植物分配更多的资源用于生长。为了进一步研究这些结果，我们进行了代谢组学分析，以探索C。在自然发生的同种和异种田间生长的斑。与温室试验结果相似，C. maculosa个体积累了较高水平的防御相关的次生代谢产物和较低水平的初级代谢产物时，生长在同种与异种领域的立场。叶草食动物在两种林分类型是相似的，但是，一个单独的实地研究正相关的专业草食动物负载与较高密度的C。同种斑我们的研究结果表明，一个单独的C。斑花植物可以根据其邻居植物的身份改变其防御策略。这可能对个人和社区的成功产生重要影响。
Chemical and biological processes dictate an individual organism's ability to recognize and respond to other organisms. A small but growing body of evidence suggests that plants may be capable of recognizing and responding to neighboring plants in a species specific fashion. Here we tested whether or not individuals of the invasive exotic weed, Centaurea maculosa, would modulate their defensive strategy in response to different plant neighbors. In the greenhouse, C. maculosa individuals were paired with either conspecific (C. maculosa) or heterospecific (Festuca idahoensis) plant neighbors and elicited with the plant defense signaling molecule methyl jasmonate to mimic insect herbivory. We found that elicited C. maculosa plants grown with conspecific neighbors exhibited increased levels of total phenolics, whereas those grown with heterospecific neighbors allocated more resources towards growth. To further investigate these results in the field, we conducted a metabolomics analysis to explore chemical differences between individuals of C. maculosa growing in naturally occurring conspecific and heterospecific field stands. Similar to the greenhouse results, C. maculosa individuals accumulated higher levels of defense-related secondary metabolites and lower levels of primary metabolites when growing in conspecific versus heterospecific field stands. Leaf herbivory was similar in both stand types; however, a separate field study positively correlated specialist herbivore load with higher densities of C. maculosa conspecifics. Our results suggest that an individual C. maculosa plant can change its defensive strategy based on the identity of its plant neighbors. This is likely to have important consequences for individual and community success.
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DOI：
10.1073/pnas.0306604101
发表时间：
2004-03-16
影响因子：
11.1
作者：
Gruntman, M;Novoplansky, A
通讯作者：
Novoplansky, A
影响因子：
7.4
作者：
Broeckling, Corey D.;Reddy, Indira R.;Sumner, Lloyd W.
通讯作者：
Sumner, Lloyd W.
影响因子：
1.7
作者：
Cipollini, DF;Bergelson, J
通讯作者：
Bergelson, J
影响因子：
7.4
作者：
Izaguirre, MM;Scopel, AL;Ballaré, CL
通讯作者：
Ballaré, CL
影响因子：
2.8
作者：
Greene, Michael J.;Gordon, Deborah M.
通讯作者：
Gordon, Deborah M.